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(NdMOdGL) J. G. MGAULEY.

FURNACE FOR BOILERS.

No. 248,772. Patented Oct. 25,1881,

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JOHN. G. MOAULEY, OF NEW? YORK, N.

FURNACE FOR BOILERS.

SPECIFICATION forming part of Letters Patent No. 248,772, dated October 25, 1881.

Application filed February 2, 1881. (No model.)

To all whom it may concern Be it known that I, JOHN G. MOAULEY, of the city, county, and State of New York, have invented a new and useful Improvement in Furnaces and Boilers; and I do hereby declare that the followingis afull, clear, and exactdescription ofthe same, reference beinghad to the accompanying drawing, and to the letters of reference marked thereon forming a part of this specification, in which the drawingis a side elevation and longitudinal section of my improved furnace and boiler.

My invention relates to that class of furnaces and boilers in which granulated, pulverized, or liquid fuel is consumed; and the object of my invention is to equalize the heat in the combustion-chamber and flue, and to protect the head of the boiler from the intense heat, and also to utilize all the heat generated by the arrangement and combination of the boilers, as hereinafter described.

A is the combustion-chamber, which is constructed of fire-brick or other fire-proof material. The top of the combustion-chamber is arched in the usual manner, and has a flue at one end. The bottom is flat, or nearly so, and rising up from the bottom near the flue is a bridge-wall, B. In the opposite end of the combustion-chamber is an air and fuel pipe, C. One or more can be used. In the side or bottom of the combustion-chamber are one or more doors, D, to remove any accumulation of ashes or other deposit that may be made there in. E is a flue from the combustion-chamber to the boilers. In this flue, a short distance above the con1bustion-chamber, is a deflector, F. The lower side is made at an angle, as shown. Above this deflector the flneis partly closed by the angle-wall Gr. The wall G can can be made at any angle or straight. In this wall are openings for the flame andheat to pass through to the boilers, as shown at H. Between this wall and the boiler is a space, I. In the bottom of this space is a door, J, to remove any deposit that may collect there.

K is a flue-boiler, set at an angle of forty-five degrees, more or less. One end of this boilerrests on the wall of the flue and combustionchamber, which is made strongfor this purpose. The upper end of the boiler rests on a wall, L, or other support arranged for this purpose.

This boiler has the usual openings in the lowest part for cleaning and blowing off.

M is a boiler partly filled with flnes, the upper portion being a steam-space. This boiler is set horizontal and directly above the boiler K, to which it is connected by the pipes N and O. The object of connecting them in this manner is to equalize the heat in both boilers by a water circulation. The ends of the boilers K and M nearesttogether are incloscd, so that the heat and flame passing through the flucsin the boiler K will be forced to pass into the flues in the boiler M, as shown at P. This inclosed space has doors to allow the flues to be cleaned and to remove any deposit between the boilers.

On the top of the boiler M is a steam-chest with the usual openings, and on the end or side of the boiler are the usual steam and water gages and watersupply pipes.

The heat or gases from the end of the boiler M can be carried into any suitable stack or chimney. The boilers can be inclosed or covered to prevent loss of heat. Additional supply of air can be given to the combustion-chamber through openings in the end or in the door D, and also to the flue E through the pipe Q, if required. The boiler M can be made with the same number of-flues as boiler K by making alarger steam-chest on the top of the boiler,

and can be set at one side of the boilerK with I sufficient elevation above it to create a watercirculation.

To operate this furnace and boiler flll the boiler K with water, and the boiler M with water up to the dottedline. Place in the combustion-chamber A some light fuel and ignite it. Then force the carbonized air through the pipe 0 into the combnstion-chamber, where it will instantly ignite. The force given to the fuel will cause it to impinge against the bridgewall B and thence upward against the top of the combustion-chamber, thence against the flue-wall E, thence against the deflector F, thence up against the flue-wall E, thence against the angle-wall G, thence through the openings H into the space I, and thence into the lines in the boilers. The advantages gained by thus breaking up the ourrentis thatit makes a perfect combustion of the fuel before it reaches the flues in the boilers. The angle-wall G is to prevent the head of the boiler K burning out. Another advantage gained by breaking ing a deflector, F, in said flue, substantially as 15 up the current and equalizing the flame is it described.

protects thelining of the combustion-chamber 2. The perforated anglewall G, in combinaand flues. Theintense heat produced by burntion with the upright flue E and the combus- 5 ingpulverizedt'uel,it'concentrated atone point, tion-chamber A, as described.

will melt down any fire-brick at present used. 3. In a furnace and boilers, the combination 2o My'invention obviates these diflicuities. of the following elements: the furnace A, the hat 1 claim as my invention, and desire flue E, the angle-wall G, the heat-space I, the

to secure by Letters Patent, iscombined boilers K and M, and the connectro 1. A furnace for burning pulverized or granin g-charnber P, substantially as described.

ulated fuel, constructed of fire-brick or other JOHN G. MCAULEY. fire-proof material, having an air and fuel pipe Witnesses: in one end and a bridge-wallnear the opposite S. T. MCDOUGALL,

end, in combination with an upright flue hav- JOSEPH J. KOEN. 

